Syntax error in ELEMENT parameter

PTC Windchill 11.

gives below error while opening the URI from the visul.xxx.xml. URI is something like  http://xxxxx/Windchill/servlet/IE/tasks/com/ptc/RepresentationDownload.xml?object_ref=wt.viewmarkup.DerivedImage:81490@

<?xml version="1.0" encoding="UTF-8"?>

<wc:COLLECTIONxmlns:wc="http://www.ptc.com/infoengine/1.0"><exceptionSTATUS="-1" TYPE="Exception" NAME="exception">

<wc:MESSAGE>Syntax error in ELEMENT parameter

</wc:MESSAGE><wc:INSTANCE>

<hierarchy>com.infoengine.procunit.webject.GroupWebjectException

</hierarchy><hierarchy>

com.infoengine.exception.fatal.IEFatalServiceException</hierarchy>

<hierarchy>com.infoengine.exception.fatal.IEFatalException

</hierarchy><hierarchy>

com.infoengine.util.IEException</hierarchy>

<hierarchy>javax.servlet.jsp.JspException

</hierarchy><hierarchy>

java.lang.Exception</hierarchy>

<hierarchy>java.lang.Throwable

</hierarchy><hierarchy>

java.lang.Object</hierarchy>

</wc:INSTANCE></exception>

</wc:COLLECTION>